Oh hell, you're going to see LOTS of people on private wells and septic systems in this country for a LONG LONG time.
It's not possible to extend municipal sewer and water to every home in the country, and in many cases, people don't want to come off their wells as they feel the water is better than municipal water.
I grew up 7 miles from Harrisburg, Pennsylvania, in the 1970s and most of my friends "out the valley" had wells and private septic. All had flush toilets and electric, though.
The benefit, though, was that most of those friends? They could shoot on their own property, something that I, a lad living the much more civilized, much more refined town, couldn't do. Well, I could, but the neighbors tended to get really upset.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.